Register for heating plants



Patented Sept. 13, 1932 omen STATES JOHN J. nnnenss, or Book ISLANED,ILLINOIS, ASSIGNOR TO noox ISLAND REGISTER COMPANY, or ROCK ISLAND,ILLINOIS, A CORPORATION or ILLINOIS REGISTER FOR HEATING PLANTSApplication filed July 17, 1930. Serial No. 468,670.

ing the louvres has smaller thickness, requir ing less space for storageon warehouse shelves.

In the drawing: V 7 v Figure 1 isan end view ofthe assembled registerbox, with the end rail nearest the observer removed.

Figure 2 isa bottom view or the assembled Lo registered box. I 1

Figure bfisa section of end rail -5, seen in Figures 1 and 2. I

Figure e is a bottom View, partly broken away, showing details ofconstruction of a louvre.

Figure 5 is an end view of a louvre; Figure 6 is a bottom view of abearing pin pad. I k I Figure 7 is an end View of same. Figure 8 is aperspective topview of one end of a louvre. v I

Figure 9 shows a member for operating the louvres; and

Figure'lO showsthe form of the spring seen in Figure 1. I T r The samenumerals refer to corresponding parts in the; different figures of thedrawing. In Figures 1 and 2 the side rails 1 and 2 have straps 3 and 1bending around the cor- 11ers and riveted to end rail 5, as indicated.In Figure 3- is shown a section of end rail 5 with its U shaped lowermember 6,in which the bearing holes 6 for the louvre pins are formed.

formed. At one end a small extension of the metal is pressedintocylindrical form to provide the bearing pin? andia knob-like inem- 'ber8 which serves as a spacer to prevent the 59 leaf of the louvre fromtouching the end rail.

In Figure 4 is shown one louvre partly The pin 7 and spacer 8 are seenin end view in Figure 5. In Figures 6 and 7 is seen a small pad 9 ofsheet metal with pin 10 and spacer 11 pressed in the same shape as 7 and8, with holes 12 matching holes 13 in Figure 4 for-riveting the pad onthe louvre tojprovide pin and spacer for its other end. For at this endof the louvre an extension of the metal is formed into the half circle14,which is bent up at right angles, as seen in Figure 8, and a furtherextension 15 is bent forward to form the are shaped rim 15 seen-in Figure 8.

- In Figure 2 the pads 9 are seen riveted to the under side of thelouvres, with pins 10 indicated in dotted lines extending through the'Ushaped bottom member 6 of end rail 5'. By forming the member 6 in aroundU shape, with only space enough inside the U for the bearing pins,the bearing holes must pass through the metal 'Wall of member 6diagonally in the curve, so that the bearing surface of the hole isconsiderably increased for the pin to turn in, preventing rapid wear ofbearing holes.

7 .715 In Figure 1,"1t is the farther end rail that is indicated at 5,the nearer end rail being removed toshow shifting bar 16 with twonotches 17 and 18' and tooth 19 between the notches. Bar 16 has a pairof notches and a tooth for each louvre contained in the box. The toothprojects downward through hole 20in rim 15; Figure 2 is a bottom view sothat the point 21 of tooth 19 is-seen in hole I 20, where part of theU-member 6 of theend' rail is broken away. i

trip member 22, seen in Figure 9, is formed on strip 23, which isriveted to bar 16 so as to stand up above the face grill not shown,which covers a register box when in service, so that the'louvres may beopened or closed with the foot, or otherwise. It is easily understoodfrom Figure l'howthe moving of bar 16 will rotate all the louvres ontheir pins. The particular value of this construction is its compactnessand its ease and smoothness of operation, due to the three impulsesgiven by the shitting-bar to the 'louvres during the shift; Forwhiletooth 19 gives the impulse in hole 20 during the mid part of theshift, the sides 24; and 25 of the notches make contact with the ends ofare 15 and give the impulse during the remainder of the shift in eitherdirection, having the effect of a rack and gear with several teeth.Tooth 19 is of such shape, having sides at about 30 degrees angle toeach other, or 15 degrees from the vertical, that it nearly fills hole20 in all positions of are 15, preventing lost motion. 7

Shifting bar 16 is held down by spring 26, seen in Figures 1 and 10,which is inserted between bar 16 and strip 23 and clamped between themin the position shown in Fig. 1 when they are riveted together. InFigure 1 are seen bars 27, 27, which span the register box from one endrail to the other to strengthen the top grill, not shown. Spring 26presses up into notches in the under side of bars 27 and down againstbar 16 and strip 23, and so holds bar 16 snugly down with its notchesastride the metal bordering hole 20 of the arcs, to prevent rattlingduring operation. The spring is provided with two humps, as shown, whichpass under bars 27 and serve to retain the moving parts in either openor closed position. This action of the spring is similar to that of thespring which holds the push button of an electric switch in its inner orouter position.

Theinvention is not intended to be limited to the form or any of thedetails shown, but to embrace the scope of the following claims.

What is claimed is:

1. In a register, the combination of a plurality of sheet metal louvres;at one end of each louvre a smallextension of its metal formed into acylindrical bearing pin and spacer knob, said extension being integralwith the louvre along the entire width of the extension, the knobbeing'formed by rolling up the sides of the extension next to the louvreinto the form of a dome open at one side, and the pin being formed byrolling up the sides of the remaining portion of the extension until theedges are opposite each other; at the other end of each louvre a smallpad of metal formed with similar bearing pin and spacer knob andattached to the louvre; at this latter end of each louvre an extensionof its metal bent at right angles upward, then at right angles forwardagain and formed into an arc rim concentric with the bearing pin andpierced with a hole; a frame for the louvres having bearing holes toreceive said bearing pins; and a shifting bar crossing the louvreshaving two notches and a tooth at each arc rim, with the tooth throughthe hole in the arc rim and the two notches astride the metal of the arcrim bordering the hole.

2. In a register, the combination of a plurality of sheet'meta-llouvres; bearing pins a t-the ends of each louvre; an arc rim at one endof each louvre; a frame for the louvres having bearing holes for saidbearing pins; strengthening bars spanning the frame; a shifting barunder the strengthening bars crossing the louvres and having memberscooperating with the arc rims for rotating the louvres on their plns atrip member attached to the shifting bar for shifting the latter; and aleaf spring held at its ends between the shifting bar and trip member,having sliding pressure against the strengthening bars for preventingrattle of the parts and said springs having bowed portions for retainingthe parts in whichever position they have been set.

3. In a register, a sheet metal louvre having an extension at one end,the extension being integral along its entire width with the louvre, andthe sides of said extension at the inner or baseend being rolled uptowards each other to form a stop substantially in the shape of a domewith one side open, and to form a cylindrical pin outward of said stop.

7 4. In a register, a sheet metal louvre, a sheet metal plate secured toone end of the louvre, said plate having an extension projetting beyondone end of the louvre, the extension being integral along its entirewidth with the plate, and the sides of said extension at the inner orbase end being rolled up towards each other to form a stop substantiallyin the shape of a dome with one side open, and to form a cylindrical pinoutward of said stop.

5. In a register, a louvre having an extension at one end bent up atright angles to the plane of the louvre, said extension having anarc-shaped flange bent outward (at right angles thereto, and a holethrough said flange substantially midway the ends of the arc.

6. In a register, a louvre having a substantially semi-circularextension at one end bent up at right angles to the plane of the louvre,said extension having an arc-shaped flange bent outward at right anglesthereto from its edge near one end of the semi-circle, a hole throughsaid flange substantially midway the ends of the arc, and a shifting barhaving two notches forming an intermediate tooth, the tooth projectingthrough the hole in the flange, and the outer walls of the notchesengaging the edges of the flange at the ends of the arc.

7. In a register, the combination of a plurality of pivoted louvres, aframe for the louvres, strengthening bars spanning the frame, a shiftingbar under the strengthening bars crossing the louvres and having membersfor rotating the louvres on their pivots, a strip attached to theshifting bar, and a leaf spring held at its ends between the shiftingbar and strip, having sliding pressure against the strengthening barsfor preventing rattle of the parts, and said spring having bowedportions for retaining the parts in whichever positionthey have beenset.

8. In a register, the combination of a plurality of pivoted louvres, aframe for the louvres, strengthening bars spanning the frame, a shiftingbar under the strengthening bars crossing the louvres and having membersfor rotating the louvres on their pivots, and a leaf spring secured atits ends to the shifting bar, said spring having sliding pressureagainst the strengthening bars for preventing rattle of the parts, andsaid spring having bowed portions for retaining the parts in Whicheverposition they have been set.

In testimony whereof I aflix my signature.

JOHN J. BURGESS.

